Actron 9640A manual Select View Data from theGM Func Tion List and press

GM Enhanced (OBD II) Diagnostics

Select View Data from theGM Func-

tion List and press

.

GM arranges the PIDs in four groups:

❒ Analog: viewing of analog sensor

signals, such as measured volt-

age from O2 sensors, tempera-

ture sensors, and air flow

sensors.

❒ O2: viewing oxygen sensor information.

❒ Misfire: viewing of cylinder misfire information.

❒ Digital: viewing of switches, solenoids and

ys.

✓ Some GM trucks manufactured in 1996 – 1998 h ve only

ne PID group.

For these vehicles, the selection menu do

not

ppear.

After selecting a group, the scan tool

GMFunctionList

asks the vehicle to provide the PIDs it

supports for that group.

ENTER

4EraseCodes]

5

The scan tool displays a menu with dis-

`5

Data

Data

[

play options. Use the

to

6)View

Freeze

select an option and press

.

Select

PidGroup

Refer to “ViewingData” on page 3-9 to

setup the data list.

`Analog

on link. Mul[

After making a selection, press

to establiO2

h

communic

-

Misfire

~

tiple PIDs may be sent if the vehicle is equipped

h

ore han one computer

module — Powertrain Control Module (PCM), Tr nsmiss on Contr

l

odule

(TCM), etc. The scan tool identifies them by th

ir

dentific

n names (ID)

assigned by the manufacturer (i.e. $40 or $1F).

If the Scan Tool receives multiple

ValidatingPID23of99PIDMap

responses for a PID, such as MIL STA-

TUS, it displays the PID and with the

computer module ID blinking in paren-

theses.

If one or more modules stops responding, the scan

Please Wait

l displ

ys mes age that

the module is not responding and asks to cont

ue without it. If No

elected,

the Scan Tool attempts to reestablish commuSelect`ica

Datawi Datah thatSetupToViewm d le. ~

UP/DOWN

Entire

List

ENTER

Custom

View

ENTERMILSTATUS(ENGINE(RPM)($$110)NA0)56[AO2FF61~

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